What are the general faults of the engine pistons of automobiles?

Possible failures

1 pulling the cylinder, the piston can not get lubrication, causing some parts of the piston to dry friction, damage the cylinder. The other is that the piston ring is not cooled in time, and the piston ring is heated and expanded, which causes the cylinder to swell and die, forming a cylinder pull, and when serious, may cause the crankshaft to bend and deform.

Leakage, oil leak, piston ring on the piston is not installed after the good, or wrong installation, may lead to a decline in sealing performance, thus leaking, oil leakage, which is why some cars always burn engine oil, because the piston ring oil leak caused by burning engine oil.

3 piston pin loose. Piston pin is an important part of connecting rod and piston. Its loosening may lead to the decrease of power transmitted by piston to crankshaft and the increase of fuel consumption.